AMPERIMETRO:
El amperimetro de gancho si te fijas consiste en un anillo de metal, cuando pones un cabla (la fase o la tierra pero solo uno) la corriente fluye a través del cable se induce un voltaje en las terminales del amperimetro, solo puede medir corriente alterna, ya que la correinte directa es incapaz de inducir energia electrica.
VOLTIMETRO:
OHMETRO:
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El diseño de un óhmimetro se compone de una pequeña batería para aplicar un voltaje a la resistencia bajo medida, para luego mediante un galvanómetro medir la corriente que circula a través de la resistencia.
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Electrical measurement devices in refrigeration.
AMMETER:
The ammeter hook if you look consists of a metal ring, when you put a cabla(phase or earth, but only one) current flows through the wire induces a voltage across the terminals of the ammeter can only measure AC as the direct correinteis unable to induce electric power.
VOLTMETER:
To effect the measurement of the voltmeter potential difference has to be placedin parallel, ie, in shunt on the points between which try to perform the measurement. This leads to the voltmeter must have an internal resistance as high as possible, so that does not produce an appreciable consumption, whichwould lead to an erroneous measurement of the voltage. For this, in the case of instruments based on the electromagnetic effects of electric current will be provided with very fine wire coils and with many turns, so that low current through the apparatus is achieved when needed for the movement of the pointer.
Ohmmeter:
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The design of an ohmmeter consists of a small battery to apply a voltage to thelow resistance measurement, and then through a galvanometer measuring thecurrent flowing through the resistor.
AMMETER:
The ammeter hook if you look consists of a metal ring, when you put a cabla(phase or earth, but only one) current flows through the wire induces a voltage across the terminals of the ammeter can only measure AC as the direct correinteis unable to induce electric power.
VOLTMETER:
To effect the measurement of the voltmeter potential difference has to be placedin parallel, ie, in shunt on the points between which try to perform the measurement. This leads to the voltmeter must have an internal resistance as high as possible, so that does not produce an appreciable consumption, whichwould lead to an erroneous measurement of the voltage. For this, in the case of instruments based on the electromagnetic effects of electric current will be provided with very fine wire coils and with many turns, so that low current through the apparatus is achieved when needed for the movement of the pointer.
Ohmmeter:
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The design of an ohmmeter consists of a small battery to apply a voltage to thelow resistance measurement, and then through a galvanometer measuring thecurrent flowing through the resistor.
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